Maximum
Data Query: Obtain the top 50 values by year for pollutants measured
at monitoring sites in our network. This includes both continuous
and filter-based measurements. Click here to query validated data
from January 1999 through December 2004.

Continuous Data

Current and historic continuous monitoring data along with
monthly time-series graphs can be accessed through the
Real-time Data
page.

24-hr Filter-based Data

PM2.5
FRM Data: The State of Vermont has measured fine particulate
matter with the PM2.5 Federal Reference Method (FRM)
since January 1999. Click here to obtain concentration and AQI
data for all sites from January 1999 through June 2010.

PM2.5 Chemical
Speciation: The State of Vermont maintains two PM2.5 chemical
speciation sites. The Burlington site has been in operation since December
2000 and is part of the EPA's Speciation Trends Network. The Underhill
site has been in operation since March 2001 and is part of the IMPROVE
Network. Data is availabe for Burlington up to March 10
, 2004
and for Underhill up to September 29, 2002.

PM10 Data:
The State of Vermont has discontinued PM10 sampling at all
sites except Burlington starting in 2003. Click here to obtain concentration
data for all sites from January 1999 through December 2002.